Hitch ball apparatus



FIG. 1 is a perspective view showing the apparatus;

FIG. 2 is a top plan view showing the apparatus;

FIG. 3 is a front elevation showing the apparatus, the rear elevation appearing the same;

FIG. 4 is right side elevation showing the apparatus, the left side elevation appearing the same; and,

FIG. 5 is a bottom plan view showing the apparatus. 

The ornamental design for a hitch ball apparatus, substantially as shown and described. 